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Reports public methods that accept a <code>boolean</code> parameter.
<p>It's almost always bad practice to add a <code>boolean</code> parameter to a public method (part of an API) if that method is not a setter.
When reading code using such a method, it can be difficult to decipher what the <code>boolean</code> stands for without looking at
the source or documentation.</p>
<p>This problem is also known as <a href="https://ariya.io/2011/08/hall-of-api-shame-boolean-trap">the boolean trap</a>.
  The <code>boolean</code> parameter can often be replaced with an <code>enum</code>.</p>
<p>Example:</p>
<pre><code>
  // Warning: it's hard to understand what the
  // boolean parameters mean when looking at
  // a call to this method
  public boolean setPermission(File f,
                               int access,
                               boolean enable,
                               boolean ownerOnly) {
    // ...
  }
</code></pre>
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<p>
Use the <b>Only report methods with multiple boolean parameters</b> option to warn only when a method contains more than one boolean parameter.
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